John Cancalosi / Crocidolite v. Riebeckite. Black Mountain, Rumford, Maine, USA

John Cancalosi / Halite, commonly known as rock salt (NaCl, Sodium chloride) the mineral form of table salt, used for human consumption. Searles lake, California, USA

John Cancalosi / Amazonite, a variety of microcline feldspar (potassium aluminium silicate). Feldspars are the principal constituents of igneous and plutonic rocks, among the most common minerals on Earth. Teller Coun...

John Cancalosi / Franklinite (ZnFe2O4, zinc manganese iron oxide) was an important ore of zinc until mines around Franklin New Jersey closed. Found only around Franklin New Jersey. Sterling Hill Mine, Ogdensburg, New...